I've been getting these random sharp pains in my right boob. It'll throb for a little then it's gone. Well tonight my SO and I were wrestling around (gently of course) and using his elbow he accidentally leaned into the same boob and put all of his weight down to get up not knowing that he was leaning on me. That same pain came back and actually brought me to tears and it has not stopped throbbing since then. Any reason in particular this might happen and is it pregnancy-related?